Abstract
The inhibitory effect of ethanol on the yeast Saccharomyces cerevisiae ATCC 4126 has been studied in continuous culture under conditions where high concentrations of ethanol were produced by the yeast itself. The fermentations were carried out using a glucose, salts medium at glucose concentrations of 20, 100 and 200 gl-1. The growth function $$\mu = \hat \mu \cdot \frac{{C_s }}{{K_s + C_s }} \cdot \frac{{K_p }}{{K_p + Y_{ps} /\left( {C_{sf} - C_s } \right)}}$$ was found to describe the observed data with $$\hat \mu = 1,64h^{ - 1} ,K_s = 3,3g\ell ^{ - 1} $$ $$K_p = 5,2g\ell ^{ - 1} $$ and $$Y_{ps} = 0,43$$ as the values of the kinetic parameters. Data of other workers has also been found to fit the model.
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